I have a PW1, not a PW2, but I did have to adjust quite a bit to the touch screen. I came from a K3. I use a prepaid old iphone as my phone and it was my first touch screen gadget. I still struggle to make it "read" my fingers.
We have ipads in the house that cause me issues, my husband has none. I don't have as many issues with my fire HD for some reason.
Now I am almost used to the PW touch screen, but I too had to peck at the screen a few times to make pages change. Maybe peck isn't the right word. According to hubby, he watched me and he can't see anything wrong that I do. I have no long fingernails due to being a life long biter and also a guitar player. So that is not it.
We have determined that I am somehow touch screen challenged. Is there some weird body chemistry that can cause that? Or am I just, um weird.
But yeah, 2 fingers on the PW will bring up the size menu, that one I don't have any issues. For me its more making the screens react at all to my touch.